650nA, Precision Zero-Drift Amplifier - LPV821

LPV821 (PREVIEW)

650nA, Precision Zero-Drift Amplifier

 

Sample Availability

Prototype samples are available (PLPV821DBV). Order Now

Description

The LPV821 is a single-channel, nanopower, zero-drift operational amplifier for “Always ON” sensing applications in wireless and wired equipment where low input offset is required. With the combination of low initial offset, low offset drift, and 8 kHz of bandwidth from 650 nA of quiescent current, the LPV821 is the industry’s lowest power zero-drift amplifier that can be used for end equipment that monitor current consumption, temperature, gas, or strain gauges.

The LPV821 zero-drift operational amplifier uses a proprietary auto-calibration technique to simultaneously provide low offset voltage (20 µV, maximum) and minimal drift over time and temperature. In addition to having low offset and ultra-low quiescent current, the LPV821 amplifier has pico-amp bias currents which reduce errors commonly introduced in applications monitoring sensors with high output impedance and amplifier configurations with megaohm feedback resistors.

The LPV821 amplifier also features an input stage with rail-to-rail input common mode range and an output stage that swings within 15 mV of the rails, maintaining the widest dynamic range possible. The device is EMI hardened to reduce system sensitivity to unwanted RF signals from mobile phones, WiFi, radio transmitters, and tag readers.

The LPV821 zero-drift amplifier operates with a single supply voltage as low as 1.7V, ensuring continuous performance in low battery situations over the extended temperature range of -40ºC to 125ºC. The LPV821 (single) is available in industry standard 5-pin SOT-23.

 

Features

  • Quiescent Current: 650 nA
  • Low Offset Voltage: ±20 µV (Maximum)
  • Zero Drift: 0.08 µV/°C (Maximum)
  • 0.1-Hz to 10-Hz Noise: 3.9 µVPP
  • Input Bias Current: ±7 pA
  • Gain Bandwidth: 8 kHz
  • Supply Voltage: 1.7 V to 3.6 V
  • Rail-to-Rail Input/Output
  • Industry Standard Package
    • Single in 5-pin SOT-23
  • EMI Hardened

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Parametrics Compare all products in Ultra-Low-Power Op Amps (<=10uA)

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
Iq per channel (Max) (mA)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Rail-to-Rail
Rating
Operating Temperature Range (C)
Package Group
Features
Package Size: mm2:W x L (PKG)
Vn at 1kHz (Typ) (nV/rtHz)
Output Current (Typ) (mA)
Architecture
Input Bias Current (Max) (pA)
CMRR (Typ) (dB)
LPV821 LPV811 LPV812 OPA369
1    1    2    1   
1.7    1.6    1.6    1.8   
3.6    5.5    5.5    5.5   
0.00075    0.00054    0.000495    0.0012   
0.00065    0.00045    0.000425    0.0008   
0.02    0.37    0.3    0.75   
0.02    1    1    0.4   
0.008    0.008    0.008    0.012   
0.0033    0.0017    0.0017    0.005   
In
Out   
In to V-
Out   
In to V-
Out   
In
Out   
Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 85   
SOT-23    SOT-23    VSSOP    SC70   
Zero Drift    EMI Hardened    EMI Hardened    EMI Hardened
Zero Crossover   
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    5SC70: 4 mm2: 2.1 x 2(SC70)   
215    420    420    290   
21    4.7    4.7    10   
CMOS    CMOS    CMOS    CMOS   
      50   
125    95    98    114   

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